Commit 63744c0f authored by Dave Love's avatar Dave Love
Browse files

Revert last change.

parent 4b265472
......@@ -1122,6 +1122,32 @@ Format is: (do* ((VAR INIT [STEP])...) (END-TEST [RESULT...]) BODY...)"
(apply 'append sets)))))))
(or (cdr endtest) '(nil)))))
(defmacro dolist (spec &rest body)
"(dolist (VAR LIST [RESULT]) BODY...): loop over a list.
Evaluate BODY with VAR bound to each `car' from LIST, in turn.
Then evaluate RESULT to get return value, default nil."
(let ((temp (gensym "--dolist-temp--")))
(list 'block nil
(list* 'let (list (list temp (nth 1 spec)) (car spec))
(list* 'while temp (list 'setq (car spec) (list 'car temp))
(append body (list (list 'setq temp
(list 'cdr temp)))))
(if (cdr (cdr spec))
(cons (list 'setq (car spec) nil) (cdr (cdr spec)))
'(nil))))))
(defmacro dotimes (spec &rest body)
"(dotimes (VAR COUNT [RESULT]) BODY...): loop a certain number of times.
Evaluate BODY with VAR bound to successive integers from 0, inclusive,
to COUNT, exclusive. Then evaluate RESULT to get return value, default
nil."
(let ((temp (gensym "--dotimes-temp--")))
(list 'block nil
(list* 'let (list (list temp (nth 1 spec)) (list (car spec) 0))
(list* 'while (list '< (car spec) temp)
(append body (list (list 'incf (car spec)))))
(or (cdr (cdr spec)) '(nil))))))
(defmacro do-symbols (spec &rest body)
"(dosymbols (VAR [OBARRAY [RESULT]]) BODY...): loop over all symbols.
Evaluate BODY with VAR bound to each interned symbol, or to each symbol
......
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